protodeboronation sentence in Hindi
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- Boronic acid derivatives have also been used to suppress protodeboronation.
- Many efforts have been put towards mitigating undesired protodeboronation in cross-coupling reactions.
- This increases the rate of productive reaction and thus subdues unwanted decomposition pathways such as protodeboronation.
- Beyond this synthetic application, protodeboronation was rarely noted or valued in other chemical processes throughout the early 20th century.
- However, in more recent years, protodeboronation has emerged as a problematic side reaction with many chemical processes that utilise boronic acids.
- This has resulted in an increased usage of boronic acids, and subsequently followed by an increased number of reports concerning problematic protodeboronation.
- Conversely, basic heteroaromatic boronic acids ( boronic acids that contain a basic nitrogen atom, such as 2-pyridine boronic acid ) display new protodeboronation mechanisms.
- One of the earliest reports of protodeboronation was made by Ainley and Challenger, who were the first researchers to explore the reactivity of boronic acids with common chemical reagents.
- In fact, the addition of acid ( H + ) or hydroxide ( OH-) acts to attenuate protodeboronation by shifting the speciation away from the reactive zwitterion.
- For the 2-pyridine boronic acid, the zwitterionic compound is responsible for its rapid protodeboronation under neutral pH, through a unimolecular fragmentation of the C-B bond.
- Initial synthetic applications of protodeboronation were found alongside the discovery of the hydroboration reaction, in which sequential hydroboration-protodeboronation reactions were used to convert alkynes or alkenes into the corresponding saturated compounds.
- Initial synthetic applications of protodeboronation were found alongside the discovery of the hydroboration reaction, in which sequential hydroboration-protodeboronation reactions were used to convert alkynes or alkenes into the corresponding saturated compounds.
- One mechanistic study has revealed a variety of protodeboronation pathways in aqueous media, and displays the reaction pH ( and subsequently the boronic acid speciation ) to be an important factor in understanding the modes of protodeboronation.
- One mechanistic study has revealed a variety of protodeboronation pathways in aqueous media, and displays the reaction pH ( and subsequently the boronic acid speciation ) to be an important factor in understanding the modes of protodeboronation.
- The deliberate protodeboronation of boron acids ( and derivatives ) have been applied to some synthetic procedures, such as the installation of a stereospecific proton at chiral centers, and also in purification procedures, such as and the removal of unwanted regioisomeric boronic acid by-products.
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